Grinding machine



June 3, 1930. N. H. KLAGES GRINDING MACHINE Filed Nov. 5, 1928 2 Sheets-Sheet l INVENTOR June 3, 1930. N H. KLAGES 1,750,987

GRINDING MACHINE Filed Nov. s, 1928 2 Sheets-Sheet 2 INVENTOR 94 Jr. J54

Patented June 3, V r

eraser settl NOB/MAN H. KLAGES, F PITTSBURGH, PENNSYLVANIA, ASSIG NOR TO G. W. KLAGiES SON, INC.; A CGRIPOR-ATION OF PENNSYLVANIA I V GRINDING MACHINE Application filed November 3, 1928. Serial No. 317,008.

The invention relates to grinding machines, and particularly to machines for grinding the edges of sheets of material; such as glass and marble. The invention has for its objects, the provision of an improved work spindle and drive for the annular grinding wheel employed,permitting the convenient and accurate adjustment of the grinding wheel from time to time to compensate for the wearing away of the abrading surface of the, wheel, and the provision of a machine having an improved table or support for the sheets, whose edges are to be ground, arranged so that the table may be tilted so as to-give any desired bevel upon the sheets Without materially shifting the position of the edge of the table or sheet with respect to the cutting surface of the abrading disc or wheel, thus permitting such disc or Wheel to work at its most advantageous cutting position, regardless of the angle at which the table is tilted. One embodiment of the invention is illustrated in the accompanying drawings. wherein:

Figure 1 is an end elevation of the ma chine, and Fig. 2 is a partial side elevation and partial section.

Referring to the drawings, 1 is the base of the machine which is a relatively heavy rigid casting and 2 is a table mounted for reciprocation on the roller bearings 3, 4 and 5, such table'being reciprocated by the piston rod 6.

' operated by a suitable hydraulic power ram having the necessary range of stroke. Car- Lried upon the table is the motor 7 which drives the disc grinding or abrading wheel 8 by means of the spindle 9. A suitable casing 10 encloses thespindle and wheel with a receptacle 11 for catching the water which is supplied to the wheel from thepipe 12.

The spindle 9 is ournalled in the sleeve 13 by means of the bearings 14 and '15, which sleeve is threaded "through the block 16 carried by the bed 2, thus permitting ofthe adj ustment of the disc 8 to compensate for wear. The sleeve is rotated by means of the worm wheel 16 splined to the sleeve and engaged by a worm 17 rotated by the crank 18. The worm wheel 16 has its hub swivell ed, as shown, to

the block 16 bolted to the bed 2. The left hand end of the spindle 9 is splined in the coupling block 18 (driven from the motor 7), thus permitting of the endwis'e adjustment of the sleeve 13 and the spindle carried thereby.

Mounted in front of is the means for. supporting the sheets whose edges are to be ground or smoothed. This meanscomprises' the two standards 19, 19 mounted on the base 1, the brackets 20, 20 mounted for angular adjustment on the standards, and the plate 21 pivoted at 22, 22 to the brackets 20, 20. The standards 19,- 19 and brackets 20, 20 have opposing flat surfaces at 23 in sliding engagement, and the brackets are provided with the racks 24, 24 V fitting in slots in the faces of the standards.

These racks are engaged by a pair of pinions 25, 25 on the transverse shaft 26journalled in the standards. By rotating the shaft, the brackets may be adjusted up and down. The shaft 26 is'provided with a squared portion the grinding wheel- 8 i 26 (Fig. 1) to which a wrench may be apv plied to rotate the shaft. In order to clamp the brackets in adjusted position, the bolts 26 are employed (Fig. 2), such bolts being screwed into the standards 19'and having their shanks lying in slots in the brackets 20.

The plate 21has pivoted to its ends the slotposition 'of adjustment. The dotted lines show the plate 21 and links in one position of adjustment and the fulllines show the plate and links in another position of adjustment:

l/Vhen it isdesired to face off the plate 30 of glass so that its'edge is atright angles to its sides, the plate21 and links 27 occupy the positionsshown in full lines, and the table 2is reciprocated backand forth on the bed 1 to carry the edge of the plateacross the face of the grinding wheel 8, thewheel'being slightly inclined so as to out only on one-side as iswell-known inth'e art. At this time the rear edge ofthe plate 30 is held. against move-" ment by the stop members 31, 31 held in ad} justed position on the" rods 32,32 by means of set screws, the rods, themselves, being securely mounted and held on the under of the plate 21 in any suitable manner. When wide plates are to have their edges ground, the stop members 31 are removed and other members 33 and 34 are substituted, such meme bers being shown in dotted lines. The members 34 constitute the stops, while the members 33 lie beneath the plate to be ground and give it additional support.

When the plate is to be beveled, the plate 21 is tilted as shown in dotted lines, the links 27, 27 being locked in position by the nuts 29, 29, as heretofore explained. Any desired angle of beveling may be secured by tilting the plate 21 the necessary amount. If the pivots 22, 220i the plate 21 remained in the full line position shown, the tilting movement of the plate would carry the edge of the plate 21 to the left and downward into interference with the periphery of the grinding wheel. The provision of the angular sliding support of the brackets 20, 20 in connection with the rack and pinion adjustment takes care of this difficulty as the upward angular movement of the standards keeps the forward edge of the plate 21 at a proper position despite the movementof such edge due to the tilting of the plate as above described. Therod 35 (Fig. 1) serves to shift the clutch which controls the back and forth movement of the bed 2, such rod being connected at its right hand end to the lever 36 carried on the shaft 37 and operated by the handle 38.

What 1 claim is:

l. The combination with a plate for supporting a sheet whose edge is to be ground, a supporting bed in front of said plate, a block carried by the bed, a sleeve threaded through said block for endwise adjustment and provided upon its interior with bearings, a work spindle journalled in said bearings and movable endwise with the sleeve, a grinding wheel carried by said spindle, means for rotating the sleeve to adjust it endwise through said block comprising a worm wheel splined to the sleeve and swivelled against axial movement relative to the bed, and a worm for whose edge is to be ground, comprising standard means in front of the wheel having a guide face inclined upward and to the rear at an acute angle to the vertical, bracket means having a face slidably engaging said guide face, interengaging means between the standard means and the bracket means for adjusting thebracket means on the standard means, other means for locking the bracket NORMAN H. KLAGES.

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